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Numerical Simulation and Performance Study of Adjustable Steam Ejector Using CFD ZHANG Qi1,a, LIU Ruo-fei1, LIU Hao1, WANG Ru-wu2 1Institute of thermal and environmental engineering, Northeastern University, Shenyang 110004, China; 2Shenyang Feihongda Energy Conservation Equipment Technology Development Co. , Ltd., Shenyang 110004, China.
aEmail: neu_zq@126.com) Key words: Ejector; Performance; Numerical Simulation; CFD; Energy saving Abstract：A djustable ejector flow control can be achieved to export in a stable area, thus reducing the jet inlet parameters on the export parameters as well as the impact of the entire system, widening of the jet's effective operating range.
CFD analysis on performance of steam ejector and its application in saving energy technology[D].
CFD Based Numerical Simulation of Steam Ejector and Its Performance.
Investigation of entrainment behavior and characteristics of gas–liquid ejectors based on CFD simulation.

Performance Study of Structure Improvement Design for Storage-type Domestic Electrical Water-Heaters based on the CFD Simulation Zhijun Zhanga , Shiwei Zhangb, Chenghai Xu c School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China a zhjzhang@mail.neu.edu.cn, bshwzhang@mail.neu.edu.cn, cxch1940@126.com Keywords: Electric Water heater, utility efficiency, Structure improvement, CFD, Simulation Abstract: The 3D physical model with two different structure of the electrical water heater was built.
The performance of water heater was studied by computer fluid dynamics simulation (CFD).
But the computer fluid dynamics simulation (CFD) was simply and low cost, and could be easily shown single factor effect.
The objective of this investigation is to examine the performance of domestic EWHs by CFD simulation method.
The performance of water heater was studied by computer fluid dynamics simulation (CFD).

For this basic investigation, the simulations were solved for the 2D case.
It is shown below that the assumed pressure distributions in the analytical solutions of the previous section are not confirmed by the CFD simulations, and this has a direct consequence on the results computed with the momentum equation.
To evaluate the simulation results, the pressure distribution from the CFD computations was used to calculate the analytical momentum equation pressure term in the horizontal direction.
Result of vertical outflow simulations The small deviations between the analytical and CFD results for the horizontal and vertical outflow shown in Fig. 6 and Fig. 9 respectively are slightly different in magnitude.
numerically using the pressure distributions from the CFD simulations, what might introduce slightly different errors.

Geometric modelling and meshing have been carried out using ANSYS ICEM CFD.
Computer simulations have been carried using the commercial CFD package, ANSYS FLUENT.
The CFD software, FLUENT, has been widely used for simulation of fluid flow problems.
Thus these works can be accomplished through numerical simulations [4].
Hence this work focuses on exploring the efficacies of CFD based numerical simulations in a stir casting process and consequently the effect of different parameters such as the ratio of stirrer to crucible dimensions, rotating speed etc. on the mushy state mixing and in turn on the solidification pattern Simulations The stir casting process, which is one of the most employed methods for the production of the MMC, has been studied.

Methodology The scope of this study includes actual experimental and CFD simulation in LEV.
After actual experiments were conducted, CFD simulations were then modeled and performed.
Air flow of each hood and discharge obtained from measurement were used as boundary conditions in CFD simulation.
After CFD simulations were performed and obtained, the next step is to perform the validity of CFD modeling by comparing CFD simulation results with actual experiment results using absolute error equation as shown below: (1-2) where: is absolute error.
is the absolute difference between CFD simulation values and actual measurement values for variable X.

CFD Numerical Simulation of Internal Flow for Electronic Gasoline Injector Xiaoyan Lia, Zhendong Zhangb ,Hao Qianc , Qiang Chengd Institute of Automotive Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China aLixiaoyan2009niu@163.com, busstzzd@126.com, cqh198509@126.com, d417151665@qq.com Keywords: electronic gasoline injector；CFD ；numerical simulation ；internal flow Abstract.
The aim of this paper is to define a CFD methodology for the simulation of gasoline injector.
For instance, a CFD methodology of a PFI engine has been used to evaluate the injector geometry and injection timing influences on the mixture preparation and a new CFD approach for assessment of swirl flow pattern in HSDI diesel engines [1,7].
In particular, CFD simulation is focused on the investigation of the influence of different structures of valve seat with various angles of nozzle inclination on pressure distribution and the changes of average velocity in the nozzle.
A new approach to analysis the internal flow of electronic gasoline injector by means of CFD numerical simulation is developed and presented.

CFD Simulations The model of the electric hob with one heating element was created in software ANSYS Fluent.
Results and Discussion The computational domain of CFD simulation is located in the intermediate zone of the thermal plume.
The results from CFD simulations for the surface heat source with diameter ϕ100 mm and input power 1500 W indicate conical shape of the thermal plume rising above the hot surface of the heat source.
The results from the CFD simulations show good consistency with the standard DIN 18869 at heights 0.5m and 1.2 above the hot surface.
Summary The results of our CFD simulations showed good consistency with the German standard DIN 18869.

There have many measures to improve the defrosting capacity, including experiment, CFD numerical simulation analysis and so on.
The discrepancy of the result about the CFD numerical simulation analysis and experiment in 5%, and the discrepancy could be accepted [3].
There have discrepancy between the result of the CFD numerical simulation analysis and experiment, but the discrepancy in 5%,this discrepancy is considered reasonable.
Using the CFD numerical simulation and doing some experiments to validate it.
There have some discrepancy could be found from the CFD numerical simulation analysis and the experiment result, but the discrepancy in 5%, this discrepancy can accept.

Three Phase CFD-Simulation of CAS-OB Ladle Timo Kulju1,a, Seppo Ollila2,b, Riitta L.
Initial mesh for this ladle is done with the Gambit-2.4.6 program and the simulations are performed with the OpenFOAM-2.1.1 CFD-package.
CFD-Model.
The CFD-model used in this simulation is a modified Eulerian multiphase model [7], which includes volume of fluid (VOF) interface capture [8,9].
The next steps in this study would be to run simulations with different inlet values and include the bell into the simulations.

Simulation and Analysis of Formula Racing Car Double Tail Based on CFD Technology Ning Kang1, a, Yang Yang1,b 1School of Transportation Science and Engineering, Beihang University, Beijing, 100191, China akangning@buaa.edu.cn, bkeithyoungrsr@hotmail.com Keywords: Aerodynamics, Lift, CFD, Double Tail Abstract.
CFD technology has been widely used in racing car.
Half car model along the longitudinal plane of symmetry was used in the simulation.
The surface mesh is shown in Fig. 4. 1.4 Boundary Conditions In order to get a more accurate simulation, a moving ground plane and rotating wheels are considered.
Gao: Aerodynamic Shape Design of FSC Car Body Based on CFD Technology.